alexisgoff
alexisgoff alexisgoff
  • 18-05-2021
  • Mathematics
contestada

Solve for x.

x2 + 4x - 21 = 0

A.) -3,-7
B.) -3,7
C.) 3,-7
D.) 3,7

Respuesta :

dronslover
dronslover dronslover
  • 18-05-2021

Answer:

x=3 or x= −7

Step-by-step explanation:

Answer Link
goddessboi goddessboi
  • 18-05-2021

Answer:

C) 3,-7

Step-by-step explanation:

x² + 4x - 21 = 0 (Given)

(x+7)(x-3) = 0 (Factor)

x+7 = 0 and x-3 = 0 (Zero Product Property)

x = -7 and x = 3 (Final Solutions)

Therefore, C is correct

Answer Link

Otras preguntas

Balance the following equation. _FeO + _PdF₂ → _FeF₂ +_PdO.
please see attached picture of question
If the two triangles are congruent choose the condition that exists that proves it. If the two trianges are not congruent select "the two triangles are not cong
Write the prime factorization of 48
3. Calculate the gravitational force on a 23,000 kg object that is 450,000 m above the surface of the Earth? The Earth's mass is 5.9 x 1024 kg. Gravitational Fo
Long playing discs were introduced by columbia records in 1948 and rotated at what speed?.
can someone help me with this? I've been on online instruction for a really long time​
Which structure filters the blood to create the filtrate, which normally contains water, urea, and electrolytes?.
PLEASE HELP THIS IS DUE TOMORROW MORNING!!!! 2.Suppose 240 students bought tickets to the dance. How many cups of orange juice and sprite are needed for the dan
Sarah wants to know where in her garden chamomile would grow the best. She thinks chamomile will grow best in the corner of the garden that gets the most sunlig